ATI LPN
ATI LPN Pharmacology Exam Questions
Extract:
Question 1 of 5
Calculate the following dosage using ratio and proportions method (Round answers to the nearest tenth). Order: Digoxin 0.375mg p. o. daily. Available: Digoxin (scored tablets) labeled 0.25mg
Correct Answer: B
Rationale:
To calculate the correct dosage of Digoxin, we set up a proportion: 0.375mg is to 1 tablet as X mg is to 0.25mg. Cross-multiply to get 0.375 = 0.25X, then divide 0.375 by 0.25 to find X = 1.5 tablets.
Choice B is correct as it represents the calculated dosage.
Choices A, C, and D are incorrect because they do not match the calculated result.
Choice A would result in an overdose, choice C is too small of a dose, and choice D is too high of a dose.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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